| 发明名称 | Composition and method for recovering hydrocarbon fluids from a subterranean reservoir | ||
| 摘要 | A composition comprising crosslinked expandable polymeric microparticles capable of hydrolysis at or below neutral pH and a method of modifying the permeability to water of a subterranean formation by introducing such compositions into the subterranean formation is disclosed and claimed. This invention further relates to compositions and methods for the recovery of hydrocarbon fluids from a subterranean reservoir or formation subjected to CO2 or CO2 Water Alternating Gas flooding at low pH and increases the mobilization and/or recovery rate of hydrocarbon fluids present in the subterranean formations. | ||
| 申请公布号 | US9120965(B2) | 申请公布日期 | 2015.09.01 |
| 申请号 | US201213359596 | 申请日期 | 2012.01.27 |
| 申请人 | Nalco Company | 发明人 | Kurian Pious;Wei Mingli;Chang Kin-Tai |
| 分类号 | A47B43/00;C09K8/588;C09K8/584;C09K8/60;C09K8/594 | 主分类号 | A47B43/00 |
| 代理机构 | Brinks Gilson & Lione | 代理人 | Brinks Gilson & Lione ;Babych Eric D. |
| 主权项 | 1. A composition comprising: crosslinked expandable polymeric microparticles having (i) an unexpanded volume average particle size diameter from about 0.05 to about 2,000 microns and (ii) a crosslinking agent content from about 50 to about 200,000 ppm of at least one labile crosslinker based on a molar ratio of said polymeric microparticles capable of cleavage, at or below neutral pH and from 0 to about 900 ppm of at least one non-labile crosslinker based on a molar ratio, wherein the at least one labile crosslinker is selected from at least one of the following structures 1-26. | ||
| 地址 | Naperville IL US | ||